Research supposedly supports the preference of mocker females for males with a wide repertoire. Perhaps choosing a good mimic means she chooses a male who is mature, experienced, and intelligent, and mating with him gives her preferences genetic advantage, as well as giving his mimicry ability a genetic advantage. I hope I'm not butchering an explanation of heritability of sexual attractiveness. Perhaps a scientist on the list will help out.
On Jun 10, 2008, at 11:05 AM, Bill Osborne wrote:
Love Mockingbirds. Have heard Mockingbirds will sing all night when the female is on the nest.
Has anyone an idea of why these birds do the imitations?